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| Criterion |  UX Research User Interviews |  UX Research Affinity Diagramming |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 30–60 min per interview | 45–90 min | 30-60 min | 20-35 min |
Participantsdifferent | 1 participant per interview | 3-10 | 1-5 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Theme clusters, Insight statements, Opportunity areas | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tagsno overlap | QualitativeResearchCustomerDiscovery | SynthesisQualitativeRoot cause | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |